Metal protection for building walls



Nov. 6, 1923. 1,473,584

.1 M. NORMAN METAL PROTECTION FOR BUILDING WALLS v Filed Nov. 4, 1922 Patented l lov. i923.

JAMES M. NORMAN, 0E .ATLANTA, GE QRGIA, ASSIGNOB Ti DQ'WEEAN-DOZIER 1 OF ATLANTA, GEORGIA, A CORPORATION 01* GEQBGIA. 4

IEETAZ EROTECTION FOR BITILDENG TVALLS.

Application filed November 4, 1922. Serial No. 589,017.

To all whom may concern.

Be it known that 1, JAMES M. NORMAN, a citizen of the United States, and resident of Atlanta, in the county of Fulton and State of Georgia, have inventedcertain new and useful Improvements in'MetalProtection for Building l Valls. of which the following is a specification, reference being had therein to the accompanying drawing.

In the construction of fireproof or ap-, proximately fireproof buildings it is common to provide metal parts to be applied at windows and door'openings to hold the plaster securely upon the walls and to pro tect the edges and close any crevice between the frame and the adjacent portion of the wall.

The general object of this invention is to provide at low cost simple, easily applied and effective devices for the gested.

In the accompanying diagrammatic drawings,

Figure 1 is a horizontal cross section of one side of a door frame and the adjacent portion of the wall;

Fig. 2 is a perspective view of a plasterprotecting strip or plate detached from the wall;

Fig. 3 is a section similar to Fig. 1 but showing in certain parts modified constructions.

In these figures, A represents partition studs, B, C, and D jamb, stop, and door member, all indicated in position by dotted lines, and usually of hollow metal or wood metal sheathed. Upon each of the opposite faces of the studs A is secured, e. g. by nails A, a broad sheet metal strip E having its marginal portion adjacent to the jamb bent abruptly outward and then backwardly to form web F at the edge of a plaster coat G and a web H parallel to the body of the strip and externally flush with the outer face of that coat. In the body of the strip many segments are out free on three sides to form spaced tongues I, I which are all pressed outward in curved form, as shown. outward to a distance a little more than half the plasters thickness and their free marginal portions are curved slightly back toward the body of the strip, from which they are widely separated, to form a series purposes sug- These tongues preferably extend of broad hooks so far separated from the strip and from each otherthat plaster of proper consistency be-mg applied in the usual way will fully envelop the books, the

latter thus becoming embedded in the body of the'plaster, hat portion under the hook being integral and continuous on each side with the body of the coat. .P'referably, the hooks are turned in different directions,

those of the first pair, for example, being oppositely turned outwardly, and those of the next pair I being inwardly turned, and

so on. g

The plaster coat cannot, then, move from the wall without the tearing out bodily from the inner face, by the many hooks of numerous integral portions of the plaster coat. It follows that the plaster, no matter how jarred in use, is never detached. At the same time the margin of the plaster coat is fully protected by the webs F, In some cases the plaster does not extend to or over the jamb, and in that case I use one of the very old and common formsof hollow metal corner moldings J, K, L, each having preferably one broad, plane, inwardly turned marginal portion to rest against the adjacent j amb or plaster face to aid in accurately holding the molding while it is being secured by screws M or the like.

If desired, the protecting margin of the strip covering the edge of the plaster coat may itself extend over the jamb as shown at N, Fig. 3, and being bent back, if desired in the form of one "of the moldings above mentioned, the quarter round form being shown.

What I claim 1. For use in connection with door and window frames in the walls of buildings, a sheet metal plate having a plane body adapted for attaching fiatwise to such frame and provided along the side adjacent to said opening with a hook-like flange forming with the body a grooveadapted to be filled by mortar constituting a plaster wall-coat, and further having along the middle region of said body a series of spaced, integral, laterally and terminally open hooks projecting to the middle region of thespace bounded by the main surfaces of the plaster coat.

2. For protecting and holding plaster around a window or door frame, a sheet to one face of the frame and having aplane body with an integral marginal flange bent back upon itself into a plane parallel to and at a plaster coats thickness from said body,

7 said body having in its middle region sets or" oppositely turned laterally and termn nally open integral slightly resilient hooks projecting into the middle portion of the space between said body and said plane.

3. A plaster securing and protecting sheet metal strip secured, flatwise, to a frame fixed in a building wall opening and prov ded with a series of central, integral po out free on three sides and pressed ouP-Ju forming pairs of oppositely turned, laterally open hooks under which mortar may pass unobstructed at all parts of the free margins, whereby open hooks are embedded margins and form a continuous mass trally enclosing the hooks, and further pr in an otherwise continuous and homogene ous plaster wall;

4:. A plaster holding and protecting sheet metal strip secured, flatwise, to a frame iii-zed in an opening in a building wall and provided with a series of central integral portions each out free on three sides and bent outward forming laterally and terminally open hooks under which plastic mortar will pass, unobstructed, at all parts of the free cen- lerl with an integral marginal bent oack upon itself to cover the edg oi tne piaster coat.

In testimony whereof I my signature.

hereunto afiix JAMES M. Nonarur. 

